T hoguet/issue5 (#37)

* enregistrer les calendar settings dans le localstorage
Fixes #5

* Refactor calendar settings service to use a definitions map for settings and update related components to access settings via a getter method

* Update src/app/services/calendar-settings-service.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Refactor calendar settings service to utilize a new storedSignal implementation for localStorage persistence and restore the stored-signal utility

* Update typescript-eslint to version 8.46.3 and enhance error handling in storedSignal function

* Update src/app/services/calendar-settings-service.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Enhance storedSignal function to accept an Injector for improved context handling in localStorage persistence

* Skip initial execution in storedSignal effect to prevent unnecessary localStorage writes

* Refactor get method in CalendarSettingsService to throw an error if the setting ID doesn't exist

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

src/app/components/calendar-year/calendar-year.ts

@@ -35,7 +35,7 @@ export class CalendarYear {
 		effect(() => {
 			this.selectedDates = this.calendarService.getSelectedDatesForYear();
 			const vacationData = this.userInput.vacationNumberSignal();
-			const c = this.calendarSettingsService.samediMalin();
+			const c = this.calendarSettingsService.get('samediMalin')();
 			console.log('Samedi Malin setting:', c);
 			console.log('Optimizing vacations with data:', vacationData);
 			this.isLoading.set(true);